Unable to write to temporary folder: /tmp/

Just got me a sandbox at phpfoxsolutions and when trying to install the latest v4, I am getting the dreaded Unable to write to temporary folder: /tmp/ . This is on a newly provisioned phpfoxsolutions vps. I don't want to bother their team as it is a test box that will never go live, but none the less, if you know the fix, please post it here for all to enjoy.